Here, 'inside' indicates direction/place without a following object, modifying 'go', so it is an adverb.

'Reaction' is the noun form derived from the verb 'react'. Using it effectively turns the action into a thing (nominalization).

Here, 'so' connects two independent clauses, functioning as a coordinating conjunction indicating result.

'Whom' is the objective case of 'who' and functions as the object of the verb 'respect' in the relative clause.

'A' (and 'an') are indefinite articles used to refer to non-specific items.

Here, 'yesterday' modifies the verb 'saw' by telling when the action happened, functioning as an adverb.

Here, 'Yesterday' acts as the subject of the sentence. Subjects are typically nouns or pronouns.

It is a present participle acting as an adjective to describe the noun 'sun'.

'During' refers to a duration of time, classifying it as a preposition of time.

A phrasal verb is a verb combined with a particle that creates a new meaning. 'Turn off' means to extinguish.